Machine for inserting fastenings.



L. A. CASGRAIN.

MACHINE FOR INSERTING FASTBNINGS.

APPLICATION FILED AUG. 24, 1904. RBNEWBD sBPT. 11. 191s.

1,092,895. Patented Apr. 14, 1914.

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COLUMBIA PLANOCIRAPH co.. WASHINGTQN. D. c.

' L. A. CASGRAIN.

MACHINE POB INSERTING FASTBNINGS. APPLIOATION FILED AUG.24, 1904. RENEWBD SEPT. 11. 1913.

1,092,895, A Y Patented Apr. 14, 1914.

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L'. A. vCASGRAIN.

MACHINE PoR INSBRTING PAsTENmGs. APPLICATION FILED AUG.24, 1904. RENEWED SBPT.11, 1913. 1 ,092,895, Patented Apr. 14, 1914.

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L. A. oAsGRAIN.

MACHINE FOB. INSBRTING FASTENINGS.

APPLICATION FILED AUG. 24, 1904. RENEWED SEPT. 11, 1913.

1,092,895 v Patented. Apr.14,1914.

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MACHINE PoR INSBRTING PAsTENINGs. APPLICATION FILED AUG.24, 1904. RBNEWBD SEPT. 11, 1913. l 1,092,895, l Y Patented Apr. 14, 1914.

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LOUIS A. CASGRAIN, OF WNCHESTER, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, JERSEY'.

MACHINE FOR INSERTING FASTENINGS.

Specification of Letters Patent.

Patented Apr, 1d, 1914,.

v Application filed August 24, 1904, Serial No. 222,022. Renewed September 11, 1913. Serial No. 789,379.

accompanying drawings, is a specification,

like reference characters on the drawings indicating like parts in the several figures.

The present invent-ion consists of improvements in machines for inserting fastenings, and it relates especially to worlcsupports and to such parts of a machine of this character as cooperate with the work-support.`

For the purpose of illustration, the int provements which constitute this invention are shown herein as applied to a pegging machine of the type represented by Letters `Patent of the United States No. 581,066, dated April 20, 1897. It will be obvious, however, that the invention is not limited to use in this particularmachine but that it is equally well adapted for application to any machine in which the work is sustained upon a support while fastenings are inserted or while any other similar operation is carried out.

A principal object of the invention is to improve the construction of the mechanism for operating the work-support, particularly with respect to the raising and lowering of the work support at the starting and stop' ping ofthe machine, so that better and more rapid work than heretofore may be performed with less effort upon the part of the operator. Tith this object in view, the machine isprovided with a reciprocable or vertically movable worlnsupport which is preferably arranged to remain normally in depressed position and thus when the ma-` chine comes to rest, the work may be removed from or put upon the support readily.

ln shoe-pegging machines of the type illustrated, an awl is caused first to enter and partially to penetrate the work, then ta more laterally to feed it over the hor., then to pass completely through the work, and finally to rise and return to its initial position, after which the peg is driven by suitable mechanism. During this feeding by the awl it is best that the horn should exert upon the work no substantial pressure or at most only a very light pressure, such as is sullicient to keep the horn and work in proper relative position. On the other hand, it is important that the horn should be locked in position or held with considerable pressure against the work while a fastening is being driven. ln machines, represented by the patent above referred to, 1n which a strong spring exerts a heavy pressure upon the horn throughout the complete cycle of operations, it is found, in some cases, that the button at the tip of the horn causes the innersole of a shoe to curl up. The difficulty is aggravated by reason of the fact that, in this type of machine. the work and work-support are forced downl .wardly just prior to the feeding movement 1n order to carry the work out of Contact with the pressure plate or stationary foot during t-he feed. As a result, the spring which sustains the horn is further compressed, so that the innersole is subjected by the horn to even greater pressure during the feed than during the driving of the fastening. To eliminate this tendency of the innersole to curl, the shoe manufacturer has been obliged to employ a more expensive grade of stock for innersoles than otherwise would be necessary. In the machine herein illustrated as embodying the present invention, therefore, provision is made for er;- erting a light yielding pressure upon the work-support at all times while the machine is running and for locking or clamping the work-supportl in raised position. at the time the fastening is being driven, t is not essential, however, that the work-support be sustained in raised position throughout the entire cycle of operations, for, in one aspect, the invention comprises, broadly, the combination with a. vertically-movable w rksupport, arranged to remain normally in depressed position and to be raised yieldl ingly, of means to lock it in raised position. Preferably, also, `just before the work-support is locked, it is lifted slightly to compress the stock and to insure a tight joint between the parts to be united by the fasten4 ing. However, the mechanism for thus lifting and locking the support is capable of adjustment to vary the distance that the support is raised. Thus, this distance may be reduced to nothing, in which case the ieehanism will lock the support against depression without lifting it, In one embodiment of my invention, additional means is `provided for locking, or clampino', the work-support, which holds it, in the normal o-peration of the machine, not only when the awl penetrates the work priorI to the feed, but also during substantially the whole cycle of operations except during the feed.

In the machine illustrated in the accompanying drawings and as fully described in the above-mentioned patent, cutters in the horn-tip are actuated by connections through the horn to trim the end of the peg project-ing through the stock. According to the present invention, either or both of the locking4 or clamping mechanisms may be operated through the cutter-operating connections which, in turn, are operated from the main shaft, as in the machine of the patent.

As herein described, the machine is provided with a combination treadle by the depression of which the machine is started into operation, and at the same time the worksupport is raised and sustained by a yielding` pressure. 1When this treadle is operated to cause the machine to stop, the additional means for clamping the support, above referred to, is released. "An auxiliary or independent treadle may be provided to start the machine without lifting the `work-support, as is desirable for the purpose of working the peg-strip into place, as hereinafter described.

In the present invention, as in Patent No. 581,066, preferably the' awl and awl guide are actuated, immediately before the feed begins, to force the work-support down- *ardly to carry the Work away from the pressure plate. In the present machine, as herein illustrated, in addition, both the awl and awl guide rise during the feed. By reason of the friction of the awl in the stock the work is lifted by this upward movement of the awl and held up against first the guid-e and finally the pressure plate, thus reducing the friction of the horn-tip upo-n the innersole, since the horn will follow up the stock onlyV sluggishly. Another advantage in causing the awl and guide to rise during the feed, rather than after it, is the saving of time in the cycle of operations, so that the speed of the machine may be made greater, resulting in an increased output.

In addition to the features alreac y'specifically mentioned, my invention comprises various arrangementsy and combinations of parts, as well as certain important details of construction which ,will be hereinafter described and claimed.

Referring to the accompanying drawings Figure 1 is a front elevation of the head, or upper portion, of the machine; Fig. 2 is a side elevation of the same; Fig. 3 is a detail view of portions of the awl-operating and feeding mechanism; Fig. 4 is a side elevation, partly in section, of the base, or' lower portion, of the machine, including the horn or work-support and mechanism for operating it; Fig. 5 is an enlarged sectional elevation of the mechanism shown in the lower portion of Fig. l; Fig. 6 is a front elevation of the same mechanism, the treadle being shown in section; F ig. 7 is a sectional. plan on line 7 7 of Fig. 5; Fig. 8 is a similar view on line S-S of Fig. 5; Fig. 8a is a perspective view ofV part of the mechanism through which the work support is locked in position; F ig.` 9 is a detail view of a portion of the cutter-operating mechanism; Fig. 10 is a sectional elevation, similar to Fig. 5, of a slightly modified form of the inventio-n; Fig. 11 is a sectional plan on line 11e-11 of Fig. 10, the front bar of the horn slidel or yoke being indicated by dot-and-dash lines; and Fig. l2 is a detail view of a. portion of the clamping mechanism shown in Figs. 11 and 12.

As illustrated, many of the parts of the present machine are substantially the same as these fully described in the patented machine above mentioned, to which reference may be made. Hence a description of these parts in detail here is deemed unnecessary.

In general, 2 indicates the head, or upper portion, of the frame of the machine and 3 the base, or lower portion. The main driving shaft t is mounted in the head 2 to actuate the various mechanisms of the machine. The driving and idle pulleys are indicated at 5 and 6, respectively, while the friction clutch member 7, which is rotatable with the driving shaft 4r, is shown in Fig. 2 by dott-ed lines. In the construction illustrated, the spring-pressed plunger S, acting upon the lower end of shifting lever 9, tends to force the clutch member7 into drivingengagement with pulley 5. Disengagement of the clutch may be effected at a particular point only in the rotation of the driving shaft through the trigger o-n trip 10, which is controlled by the operator andwhich may be allowed to engage the stopping lever 11 fixed te rockshaft 11a, the latter being oscillated at each rotation Vof the driving shaft l by an elbow lever 11b having a cam roll engaging` a groove in a cam 12 fixed to the shaft. This clutch is fully illustrated and described in the p-atent above mentioned, and no further description in detail is necessary.

As in the patented construction, .he driver 1S, the awl 1l, and the independent awl guide 15, each are operated. through mechanisms controlled, or actuated, by suitable cams on the main shaft. For feeding the work, the slide 16, in which the verti# cally-movable awl bar 17 is mounted, is reciprocated laterally by a cam 18 fixed to the main shaft. The awl 1l, secured to awl bar 17, is moved up and down to penetrate ies messes the lwork by a cam groove in the face of cam 19 (Figs. and 3) through suitable connections, such as slide 20, which carries cam roll 21, to engage the cam groove, and rockshaft 22 having two arms, one of which, is connected to slide 20 and the other of which, 24, engages the awl bar 17. rPhe awl guide 15, also, is mounted for independent vertical movement in slide 16, being carried by a bar 25 which is controlled in position by t-he cam 19 through a lever 26 which, at one end, engages said bar 25 and, at the other end carries a roll 27 bearing upon the edge of said cam 19. rThe awl let and its guide l5 together' constitute a worleengaging means or device during the feeding of the work.

The work-support, or horn, 28, is supported to rotate freely and to be longitudinally movable in the split bearing sleeve 29. As shown, a spring 30, bearing at its lower end upon a vertically adjustable foot piece 31 carried by the machine frame, engages the horn shank' and partially counter-balances the horn and its connected parts. As below set forth, the foot piece is preferably so adjusted as to cause the horn to be balanced in depressed position, so that the operator is not required to manually depress the horn in order to remove the work. At its lower end, the horn shank 32 is threaded to be engaged by the adjustable collar 33 which has a flange 34 at its upper end and is externally threaded at its lower end to receive a split locking ring 35. A ring 36, surrounding collar 33, is provided at its inner periphery with a channel to receive the flange 34e. A cushioning device, such as a felt washer w, is located between ring 36 and stationary sleeve 29. As shown, an anti-friction device 37 is interposed between rings 35 and 36. The horn slide or actuating yoke 38 is reciprocable in ways 39 formed ly plane bearing surfaces on eX- tended arms 40 of the frame of the machine, the slide being retained in place by plates 411 suitably secured to the arms 4:0. The slide is bolted at its upper end to diametrically opposite ears L12 on the ring 36,`and at its lower end the slidey terminates in a rod which passes freely through a treadle 13, and below the treadle is provided with a transverse pin 4 4. By this construction, the hcrn is forced to part-alie of the longitudinal movements of its actuating yoke or slide, but is freely rotatable relatively thereto. The specific connections described between the horn 23 and the horn slide 38 forms no part of the present invention and any other suitable form of connecting devices may be used.

lolted to the underside of the machine frame is a bracket Loosely mounted in this bracket is a stud d6 carrying at each side a lever il? having a rearwardly extending arm i8 provided with a cam surface and a forwardly extending arm 49) terminating in a down-turned recessed end. Two springs :30, secured at one end in any convenient manner to swing with levers 47 and resting in the recesses in arms #19, extend forwardly and may be caused to engage pin lll at the lower end o-f the horn slide or actuating yoke, so as to sustain the horn with a light yielding pressure. )i cam roll 51 on each side of treadle L13 engages the corresponding' cam surface on arm 18. A spring 52 secured at one end to the machine frame and at the other end to the treadle, normally maintains the lat-ter in raised position. When the treadle is thus raised the lever 47 and springs 50 talle their lowest positions, as shown in Fig. l, with the springs out of engagement with the pin il of the horn slide, and the horn depressed. A pin 53, projecting from the treadle 13, enters a slot .f3-lin the enlarged end of clutch rod 55. rlhis rod, normally pressed upwardly by spring 56, is connected to the trigger or trip 10, as shown in Fig. 2, whereby the engagement and disengagement of the clutch members may be controlled by the operator, as above described. lt will be evident, therefore, that as the treadle 13 is depressed from the position shown in Fig. l to that of Fig. 5 the cam rolls must travel along the cam surfaces of arms 18, and thus cause the levers L17 and the springs 5G to swing upwardly and forwardly, so that the forward ends of the springs will engage the pin #il and raise the horn through the horn slide, so as to clamp the work with a light yielding pressure between the tip of the horn 2S and the pressure plate 57, secured to the head 2 of the machine, Before the treadle A3 reaches the limit of its downward movement, the pin 53 engages the lower end of slot -l and further movement of the treadle withdraws trip l() from engagement with the stopping lever 11, so that the clutch members are moved into frictional contact to start the machine. As above described, spring 56 tends to maintain trip 10 in its upper position, an adjustable stop 5S being provided to limit the upward movement. The machine will continue to operate as long as the treadle 13 held down in the position shown. in Fig. but when the treadle is released, the trip 10 is returned to position to engage the stopping lever 11 as `it is oscillated by the cam 12, and the machine is stopped with the horn depressed at the desired. stage in its operation, which, in the machine illustrated, is just after the steps of driving the peg and cutting it off are completed. This position of the parts with the machine at rest is shown in Fig. 4..

is above described, during the operation of the machine the work-support is held against the work with a light yielding pressure. While the work is being fed such a light pressure is sufficient, and a -greater pressure would be objectionable, but it is necessary that the work-support be sustained firmly or held upward with considerable force during the driving of the peg. It is, also, advantageous to compress the stock before the peg is inserted. To this end, the machine illust-rated is provided with means iirst to lift the horn positively and then to lock or clamp it while the peg is being driven. This horn-lifting and locking means is arranged to be actuated by the mechanism which operates the peg-cutting device .at the top of the horn. This device and the connections to it within the horn foiin no part of the invention herein claimed, but, for the present purposes, they may be taken to be of the character fully described in the patent, above mentioned.

The cutters, in the present machine, are closed to trim the peg by the upward movement of a rod G0 passing axially through the horn shank and rotatable therewith. Tt is important that the cutters should not be even slightly mov-ed while the horn is being raised or lowered and, as illustrated in the drawings, a mechanism is provided whereby opera-tive movement is given the cutters only through the device especially intended for operating them, which will be now brietly described. The lower end of the rod (3() is threaded into a split sleeve (Sl. itlounted rotatably on this sleeve is a collar (i2 having trunnions on opposite sides extending into vertical grooves in the horn slide 38 and provided with rolls 63 which cooperate with cam slots 64: in a pair of actuators G5 pivoted at 66 to the horn slide. yThese actuators are oscillated laterally to give the cutter rod .a cutter-operatiiig movement, independent of the movement of the horn, through a bifurcated link 67 connected at. one end to the actuators and at the other end to an elbow lever GS pivoted to the machine frame at G9. This lever (38 is connected at 70 to a rod 71 extending up through the base to one .arm of the elbow lever lll which is oscillated -constantly during the operation of the machine by the cam l). on the main Shaft, as above described.

A link 72, pivoted also at 70, is connected pivotally at 73 to a bifurcated arm 75L mounted to oscillate about a pin 75 carried by the machine frame. Between the two sides of arm 74, and loosely supported on the pin 75, is pivoted a bell-crank lever '7G which may be clutched to arm 74e by a. roll 77 which is located in the tapering recess formed between the upper end of the bell-crank lever and the underside of the top piece connecting the forks of the arm 74. A spring 78 forces the roll 77 normally toward the narrow end of the recess, so as to clutch the arm 74 to the lever 7 6. The front arm of this lever 76 engage corresponding lugs '79 on the inside of th-e ripper portions of the horn slide 38. Near the end of the forward movement of arm 74 the roll 77 is thrown backwardly toward the wider end of the tapering recess by a stop 80 adjustably secured at 81 to a Xed part of the machine. The stop thus positively disengages ariii 74 from lever 75 and determines the extent that the horn will be lifted upon the next downward reciprocaition of rod 7l. A safety stop 8:2, located on lever 7 G at. the narrow end of the tapering recess, is provided also to throw roll 77 to the wider end of the recess, and thusto disconnect members 7 -1 and '7G when theforward arm of lever 76 is abnormally elevated,

as would occur when the machine is running with the horn in its highest position with no work thereon. A spring S3, secured at one end to the bell-crank lever 76 and at the other end to the fixed stop 80, `tends to hold the bifurcated forward ends of said lever againstthe lugs 79. This spring 88, therefore, assists spring 30V in balancing the horn and, if desired, spring 30 maybe entirely dispensed with, in which case spring 83 .and springs 50 are made heavier so that they may be relied upon to maintain the horn in proper position.

By the adjustment of the stop 8() forwardly or backwardly the point in the cycle of operations at which the roll clutch is engaged and disengaged may be varied, and thus the extent. of the lifting movement imparted to the horn by the mechanism just described maybe regulated as desired.

In order to show clearly the functions of the various elements, above described,'in the operation of the machine, a cycle of operations of these parts will new be described- Assuming the machine to be at rest, as in Fig. t, the treadle 43 is elevated while the horn and the parts vertically movable with it are balanced in depressed position. The roll 77 is held byv stop 8O out of operative engagement with members 7-l and 7 6 and the peg cut-ters are closed. guide are raised, since the cam ro-ll 21, the position of which controls the movement of the awl let, is near the end of the outer concentric portion c-c of the groove in cam 191y while cam roll 27 for the awl guide 15 rests upon the concentric portion n-c of the edge of the cani. The work having been placed upon the horn, treadle 43 is depressed by the operator, thus raising the horn and sustaining it with a light yielding pressure to clamp the work, the clutch on the main v shaft also being operated simultaneously to start the machine. The awl descends and begins to enter the work as the cam roll 2l The ,awl and awl Y passes along the portion a-7i of the cam Y groove. After the awl has entered the work the desired distance, without passing enis forked, and the two forks are adapted to tirely through it, the vportion c-Z of the edge of the cam engages cam roll 27 and, during the further descent of the awl, the guide forces the work downwardly away from pressure plate 57 against the slight resistance offered by the yieldingly-sustained horn. rEhe slide 1G is reciprocated to feed the work just before, or just as, the descent of the awl and guide is completed. During the feeding movement, the a-wl is gradually raised slightly by portion b-c of the cam groove, but not enough completely to withdraw it from the work. This movement holds the work against the awl guide and reduces the friction between the work and the horn. As the machine is intended to run very fast, and as the horn is held upwardly with so light a pressure, the horn does not follow the upward movement of the work immediately and this tends also to reduce the friction of the work as it is fed over the horn. During the last portion of the feeding movement the awl guide is caused by the cam surface in n to be raised so as to allow the work to be carried against the pressure plate 57. Meanwhile, during the feed, the rod 71 has been started downwardly to open the cutters and, at the end of the feed, the roll clutch 77 operatively connects members 7i and 7 6, so that the further downward movement of rod 71 positively lifts the horn to compress the stock. The awl is now carried downwardly by the portion c-rl of the cam groove to complete the puncturing of the stock and then is immediately raised again by the portion cZ-e to its highest position, where both awl and awl guide are maintained by cam surfaces e-c and n, le, respectively, during the rest of a cycle of operations. The slide 16 having returned to its initial position (shown at the right in Fig. 1), the driver descends t-o drive the peg. During such driving, the horn is held or .locked firmly against the stock through. its connection to the cam-operated rod '71. hen, the rod 71 is raised to act-nate the devices for cutting off the peg and for releas ing the horn lock. This completes a cycle of operations, and the machine will come to a stop if the treadle 113 is released and allowed to rise. So long as this treadle is held down, the above-described cycle will continue indefinitely.

Figs. 10 and 11, corresponding to Figs. 5 and 7, already specifically described, show cert-ain additional features or modifications, any or all of which may be applied to the construction illustrated in Figs. 1 to 9, inelusive, and which are all shown as so applied in Figs. 10 to 12.

in the normal operation of the machine, it is desirable to have the 'lifting and locking of the -horn made positive through the camoperated rod 71 and the rigid connections described, but Vif the machine is improperly e ljusted for much thinner stock than is being used, or if the awl encounters a tack or other obstruction in its final downward movement, some yielding should be allowed in the horn-lifting mechanism in order to avoid breakage of parts, and particularly of the stud on which cam roll 21 is mounted. is shown in Figs. 10 and 11, rod 71 is not connected rigidly to pivot 70, as is the case in the form of the invention previously described, but this rod is mounted to slide in a socket piece 91 which is pivoted at 70. A collar 92 is fixed to rod 71 within the socketpiece, and a heavy spring 93 is interposed between the collar and the shoulder at the lower end of the recess in piece 91. A sleeve or a screw 94, through which rod 71 passes, threaded into the upper end of the socket piece and limits the upward movement of the rod relatively to the socket piece. This construction is such that, in the ordinary and proper operation of the machine, there is substantially no yielding of spring 98 when the horn is lifted in the manner described, but in case of accident or theimproper adjustment of stop SO, this spring is compressed suliiciently to avoid any breakage.

It will be noted that with the c0nstruction of Figs. 1-9, inclusive, the treadle 43 can not be depressed to start the machine without raising the horn at the same time. il is desirable, in some cases, to operate the machine with the horn down and without any workin place, as for the purpose of running a new peg-strip into position, o-r of removing a broken end of strip so that pegs may be eut from the good portion of the strip. l/Vith this object in view, the machine is shown in Figs. 10 and 11 as provided with an auxiliary treadle 95 pivoted to the combination treadle 43 at 96. An inwardly projecting lug 97 rests upon a similar lug 98 extending laterally from the enlarged end of clutch rod 55. The machine, therefore, may be started either by combination treadle 43, which also raises the horn, or by treadle 95, leaving the horn depressed.

The modified construction may comprise, also, an additional clamp or lock which is operative to hold the horn frictionally against vertical movement at substantially all times during a cycle of operations except when the work is being fed. Referring to Figs. 10, 11 and 12, the thin plates al, which retain the horn slide 38 in the ways 39, are slightly recessed upon their rear sides, as shown at 99 in Fig. 12. The portions of the base 3 directly behind these recesses also are cut away, as indicated at 100 in Figs. 11 and 12, fora purpose to be stated. On the front side of each plate all is a horizontal groove or socket 101 which receives a rounded end of a strut or toggle plate 102. Integral ears 103 project forwardly from the base 3 of the machine, and are bored to receive studs or journals 104 which project outwardly from each end of a rockshaft 105, having its main central portion offset relatively to its ends or hubs 10G. The studs 1011 have reduced inner portions 107 with threaded ends, and the ends or hubs 100 of the rocksliaft are bored to receive these reduced portions 107 of 'the studs, nuts 108 serving to clamp the hubs against the shoulders of the studs. The hubs 106 of the rockshaft have horizontal grooves or sockets 109 to receive the forward ends of struts 102, and therefore these hubs and struts forni toggles by which the plates Ll1n may be bent and caused to bear upon the adjacent portions of the horn slide 38 to clamp or lock the horn in position. Preferably, some means is provided for adjusting the rocksliaft toward and from the horn slide. As shown in Figs. 11 and 12, the inner portions 107 of the studs 10st are eccentric to the outer portions, journaled in ears 103, and by loosening the nuts 108 the studs may be turned to adjust the posit-ion of the rockshaft so as to regulate the force with which the toggle clamps the horn slide. An arm 110 depends from near the middle of the rockshaft and passes between the extended forks of the bifurcated link 67. Joining the two forks transversely and fixed therein are pins 111 and 112, carrying anti-friction rolls 113 and 114. The arm 110 passes also between these rolls. As the link 67a is reciprocated by cani-operated rod 71, the rocksliaft 105 is oscillated by the alternate engagement of rolls 113 and 1141 with the depending arm, thus operating the toggles which engage plates L11, thus causing the plates to bind or clamp the horn slide or yoke 38, whereby the horn is held against depression, as will be described below more fully. As shown, treadle 43 has a separate foot piece 115. Bolted upon the forward end of the main piece of the treadle is an upwardly and backwardly extending arm 11G to which is pivoted a plate 117 having a cani flange 118 adapted to cngage a roller stud 119 on the horizontally extending end of arm 110 for a purpose presently to bestated. A bolt 120 passes loosely through an integral lug 121 on the plate 117 and through the foot of arm 11G. A spring 122, interposed between arm 116 and lug 121, tends to swing plate 117 rearwardly. llVhen the combination treadle 43 is released to stop the machine, it will rise from the position shown in Fig. 10, and the flange 118 will engage the stud 119 on arm 110and, the roll 114C having been retracted from arm 110 before this point in the cycle of operations is reached, the rockshaft 105 will be turned in a right-handed direction to release the toggle clamp as the machine comes to rest. The spring 122 is provided to permit the plate 117 to swing about its pivot when the rockshaft has been oscillated as far as it will go by flange 118, so that the treadle L13 may be free to rise to its upper`- most position. Y

Referring to t-he normal cycle of operations of the machine, as previously described in connection with Figs. 1 to 9,7inclusive, the function of the additional friction clamp or lock, applied as shown in Figs. 10 to 12, inclusive, will now be explained. When the machine is ruiming continuously, this clamp remains operative till cam 19 has given the full downward movement which occurs before the feed to both the awl 1 4; and awl guide 15, after which, and just before the feed begins, the friction clamp is released, there being sufficient spring to the parts to isY relieve any pressure between the work and p stationarypressure plate 57. However, if desired, the cam 19 may be slightly modi- `hed to cause the movement of the awl guide for carrying the work downwardly to clear the pressure plate 57 to occur after the friction clamp has been released, after which both awl and `guide will be moved downwardly together. Because of the concentric portions of the slo-ts 611 in actuators G5, the cutters are not operated during thc final movement of the rod 71 in each direction. Hence, although the closing movement of the cutters is completed before the awl first descends, yet the rod 71 continues to move upwardly and the friction clamp is not released until roll 113 engages and swings the arin 110 backwardly to break thertoggles. This clamp remains inoperative during the feed, but at the end of the downward movenient of rod 71 and the consequent lifting action of the levers 76 upon the horn, roll 11st engages arm 110, causing the friction clamp to bind the horn slide and thus lock the horn. The operation of the cam flange 118 and other connectedmechanism, where'- by the friction clamp is automatically released when the combination treadle 43 is allowed by the operator to rise in the stopping of the machine, has already been fully described.

Having thus indicated the nature and scope of my invention and having specilically describedthe various features thereof embodied in an organized machine, what I claim as new and desire to secure by Letters Patent of the United States, is

1. 1n amachine of theclass described, a work support movable between work receiving position and work clamping position, a spring by which said supportl is yieldingly held in work'clamping position, a pivoted support for said spring whereby said spring may be moved to permit said work support to come into work receiving position, a treadle, and connections between the treadle and said springV support for movingsaid spring and throughit said work support 2. In a machine of the class described, a trame, a work support movable between .vork receiving position and work clamping position, a spring for yieldingly maintaining said work support in work clamping position, a support for said spring movable to permit said work support to come into work receiving position, a treadle, and means whereby said treadle moves said spring sup port to carry said work support into work clamping position, said means being so interposed between said spring support and said treadle that the downward pressure of said work support and `any impact thereon when said work support is held by the spring in work clamping position is transmitted directly to the machine trame.

3. In a machine ot the class described, a trame, a normally lowered jack, a sustain ing spring therefor, a pivoted support for the spring, said support having a cam surface, a treadle, and a Aroll connected to said treadle and movable along said cam surface to cause said support to raise the spring and jack, said roll being so located in said connections that the downward pressure of said jack and any impact thereon while it is supported by the spring is transmitted directly to the machine trame and not to the i'oot of the operator.

4:. In a machine of the class described, a trame, a normally lowered jack, a spring to support the jack, a movable support for said spring, said support being supported by the frame and adapted to raise said spring bodily and hence raise said jack, and manually operated treadle mechanism connected to said support for raising said support and thereby said spring to elevate said jack through the medium of said spring, said connections being so arranged that the treadle is relieved from i ars due to impact of the operating tools on the work while the jack is supported by the spring.

In a machine of the class described, a movablejack for holding the work, a treadle, a spring to support the jack, a movable member on which the spring is supported and by which the spring is bodily raised to compress it and to raise the jack, means for supporting said member independently ot the treadle, and means connected with the treadle for moving said member upon its support to raise the spring and jack, said means and member being so constructed and so operatively associated that when said spring holds the jack in raised position pres sure from the weight of said parts and any impact is not transmitted to the toot of the operator but directly to the machine frame. l' 6. In a machine of the class described, a

trame, a movable jack for holding the work, jack-supporting means comprising'a meniber pivoted to the trame and a spring supported by said member to yieldingly support said jack at different elevations, a treadle supported independently of said member but operatively associated with for actuating said jack-supporting member and spring to move the jack, and a lixed member adapted to be engaged by the work to limit the upward movement of the 'j ack whereby the continued movement of the spring after the jack is stopped effects the compression of such spring.

7. In a machine ot the class described, a. vertically movable work-support and means so counterbalancing it that it will tend to remain normally in depressed position, in combination with means yieldingly to raise said work-support and means operating alternately to lock and to unlock it while above its normal depressed position during successive cycles in the continuing operation of the machine, together with mechanisms constructed and operating during each cycle te insert a fastening into the work while the work-support is locked and to 4toed the work while the worlosupport is unlocked.

S. 'in a machine ot the class described, a vertically movable work-support and means so counterbalancing it that it will tend to remain normally in depressed position, in

combination with a pressure plate or foot, means to raise and sustain the work-support yieldingly to maintain the work in engagement with the pressure plate during successive cycles in the continuing operation oi the machine and other means operating, after the work has been raised into engagement with the pressure plate, during each c vcle to impart an additional upward movement to the work-support to compress the work between the pressure plate and the worksupport.

Y E). A vertically movable work support and means so counterbalancing it that it will tend to remain normally in depressed position, in combination with means acting to sustain the work-support in raised position with a. light yielding pressure while the work is being ted, and automatically acting means to exert additional upward pressure upon the work-support while downward pressure is being exerted upon the work.

l0. vertically moif'able work-support and means for counterbalancing it, a yielding member engaging the work-support to sustain it while the work is being ted, means to raise the work-support and to hold it rigidlyv whih` a :fastening is being driven, and means to disengage said yielding member trom the work-support so that the work may be removed easily troni said support.

Il. In a machine oit the class described, a vertically movable work-support and means so counterbalancing it that it wil tend to remain normally in depressed position, in

,combination with means tending through successive cycles of ope ation of the machine to sustain the work-supportin raised position, and means constructed and acting during each cycle of operations successively to lock the Work support against depression and to release it so that it may adjust itself to either increases or decreases in the thickness of the work.

12. In a machine of the class described, a vertically movable Work-support constructed and arranged to take depressed position as the machine comes to rest, in combination with means tending through successive cycles of operation of the machine to sustain the Work-support in raised position, but permitting the Work-support to yield in order to compensate for variations in the thickness of the Work, and mechanism, including devices to compensate for variations in the position of the Work-support, acting during each cycle of operations successively to lock and to unlock the Work-support against depression.

13. In a machine of the class described, a vertically movable Work-support arranged to remain normally in depressed position, in combination with yielding means to raise the Work-support from depressed position upon the starting of the machine and to sustain it i yieldingly in raised position through successive cycles of operation, means' acting during each cycle to give the work-support an additional upward, positive movement and means to regulate the extent of such movement.

1411. In a machine of the class described, the combination with means for connecting and disconnect-ing the machine to and from its source of power, of a vertically movable Work-support, means having provision for compensating for variations in the thickness of the Work constructed and arranged to sustain the Work-support in operative position while the machine is continuously in operation, additional means to lock said work-support in raised position, said means having provision for adjustment whereby it may also act during each cycle of operations to give an additional upward movement to the work-support, and means operating as the machine is disconnected from its source of power to release the Work-support from its sustaining means.

15. In a. machine of the class described, a vertically movable Work-support, a treadle, yielding means movable by said treadle into and out of operative relation with the Worksupport to sustain it While the work is being fed, means to lock the Worksupport in raised position, and means operated by said treadle to release the locking means.

16. In a machine of the class described, a vertically movable Work-support, a device for clamping the Work-support comprising a toggle and automatic means for operating it so as alternately to clamp and to release said Work-support, a. treadle or lever for starting and stopping the machine, and means moved by said treadle to release said clamping device.'

17. In a machine of the class described, a work-support, a treadle or lever for starting and stopping the machine, means controlled by said treadle for simultaneously lifting the Work-support and starting the machine, and independent means for starting the machine Without lifting the Work-support.

18. In a machine of the class described, a treadle or lever for start-ing and stopping the machine, a cam roll or stud mounted on the treadle, a vertically movable Work-support, and means for raising and sustaining said Work-support comprising a spring and a movable cam lever cc-acting with the roll on said treadle to render said spring operative or inoperative according to the position of the treadle.

19. A machine of the class described, comprising a vertically movable Work-support so disconnected from other mechanism when the machine is at rest as to be movable freely toward and from depressed position, means acting at such. time approximately to counterbalance the Work-support, a treadle or lever for starting and stopping the'machine, means controlled by said treadle for lifting the Work-support as the machine is started and for maintaining the Work-support raised above its depressed position While the machine continues in operation, and means acting automatically and intermittently during each cycle of operations to give an additional movement to the Work-support.

20. In a machine of the class described, a vertically movable Work-support, a cutteroperating member movable in the Work-support, means to move the Work-support intermittentlyduring each cycle of operations and a common actuator for said means and said cutter-operating member.

21. In a machine of the class described, a vertically movable Work-support, a cutteroperating member movable inthe Work-support, means to lock the Work-support in raised position, and a common actuator for said member and said locking means.

22. In a device of the class described, a reciprocable Work-support, a cutter-operating rod movable in the Work-support, a plurality of means for locking the Work-support in raised position, and a common actuator for said means and for said rod. Y

23. In a machine of the class described, an aWl and means to actuate it, a. vertically movable Work-support, a devicefo'r clamping the Work-support as the aivl is entering the work during the continuous operation of the machine, a starting and stopping treadle, and means operated by said treadle to rellO lease said clamping device as the treadle is moved to stop the machine.

24. In a machine of the class described, a pressure plate, a vertically movable worksupport, means acting with a relatively light pressure upon the work-support to sustain the work against the pressure plate, an awl for puncturing and assisting in feeding the work laterally, and means to actuate the awl to cause it successively to enter the work, to rise during the feeding movement to carry the work up against the pressure plate whereby the friction of t-he work on the work-support is reduced, and finally to descend for puncturing the work, in combination with means for holding the worksupport rigidly during the final descent of the awl. f

25. In a machine of the class described, a pressure plate, a vertically movable worksupport and means tending, when in operative position, to force the work-support toward the pressure plate, a work-engaging device, means to move it laterally to feed the work, and means to actuate said device to force the work, prior to the feeding movement, downwardly in opposition to the force exerted through the work-support and then to cause said device, during the feeding movement, to rise, whereby the work is lifted into engagement with the pressure plate and clamped between it and the workesuport.

p 26. In a machine of the class described, a yieldingly sustained work-support, a pressure plate, means to feed the work, and means operative at the end of the feeding movement for locking the work-support against depression, in combination with means for actuating said feeding means to cause it first to force the work-support downwardly to carry the work out of contact with the pressure plateand then to move laterally for feeding the work and to rise during the last portion of the feeding movement whereby the yieldingly sustained work-support is permitted to clamp the work against the pressure plate before said work-support is locked.

27. In a machine for inserting fastenings into a shoe, a rotatable and vertically movable shoe supporting horn arranged to remain normally in depressed position, in combination with means yieldingly to raise said horn and means operating alternately to lock and unlock it while above its normal depressed position during successive cycles in the continuing operation of the machine, together with mechanism for feeding the shoe during each cycle while the horn is unlocked.

28. In a machine for inserting fastenings into a shoe, a rotatable and vertically move able slice supporting horn so related to the other parts of the machine that it will normally remain in depressed position while the machine is at rest, in combination with means tending through successive cycles of operation of the machine to sustain the horn above its normal depressed position, and means constructed and acting during each cycle of operations successively to raise the horn, to lock it against depression, and to release it so that it may adjust itself to either increases or decreases in the thickness of the work, together with mechanism for feeding the shoe during each cycle while the horn is released.

29. In a machine for inserting fastenings, work feeding means, a rotatable and vertically movable shoe supporting horn constructed and arranged to take depressed position as the machine comes to rest, in combination with means tending through successive cycles of operation of the machine to sustain the horn in raised position, but permitting it to yield in order to compensate for variations in the thickness of the work, and mechanism, including devices to compensate for variations in the position of the horn, acting during each cycle of operations successively to lock and to unlock the horn against depression.

30. In a machine for inserting fastenings, the combination with means for connecting and disconnecting the machine to and from its source of power, and work feeding means, of a rotatable and vertically movable shoe supporting horn, means having provision for compensating for variations in the thickness of the work constructed and arranged to sustain the horn in operative position while the machine is continuously in operation and successively inserting fastenings, additional means to lock Vthe horn in raised position for at least a portion of the time between successive work feeding movements, and means operating as the machine is disconnected from its source of power to release Vthe horn from its sustaining means.

3l. In a machine of the class described, a treadle or lever for starting and stopping the machine, the treadle being provided with a lateral projection, a vertically movable work-support having a depending extension provided with an abutment, a pivoted lever having a cam face to co-act with said projection and a spring interposed between said pivoted lever and said abutment, said parts being constructed and arranged to raise the work-support yieldingly into working position as the treadle is moved in one direction for starting the machine and to release the work-support as the treadle is moved in the opposite direction, permitting the work-support to take work-receiving position.

32. In a machine of the class described, a

treadle 43 or 43a, a vertically movable Workname to this specification n the presence of support 28, and operatwe connections betwo subscribing Wltnesses.

tween the treztclle and the Work-support nv eludng a roll 5l on the treadle, a level1 4:7 LOUIS A CASGRAIN' having e cam face 48, and a spring 50, sub- Witnesses: stantlally as described. ARTHUR L. RUSSELL,

In testimony vvhereoi` I have signed my l FREDERICK L. EDMONDS.

Copies of this patent may be obtained for ve cents ea'oh, by addressing the k Commissioner of Patents,

Washington, D. C. 

